Primary crushers are first in a typical size reduction operation. Primaries like our Mega-Slam™ horizontal shaft impactor are commonly used in the aggregates industry to handle large feed sizes. The Grand-Slam™ HSI is well suited as secondary crusher for aggregate production for a wide range of materials including limestone, frac sand, gravel, stone, …
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This paper aims to study the impact splitting tensile properties of fly ash–recycled aggregate concrete (FARAC). The splitting tensile tests of FARAC with …
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A study on the suitability and effectiveness of machine crushed cow bones (MCCB) as partial replacement of fine aggregates in concrete works was carried out. Mechanical and physical properties of machine crushed cow bones as a partial replacement for locally available fine aggregates have been determined and compared. 36 concrete cubes of …
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In this study, the recycled aggregate replacement rate (R) is used as an analytical parameter. ... This study utilizes interpretable machine learning techniques to establish a predictive model for the bond strength between recycled aggregates and rebar. Using MDI and SHAP methods explore the influence of different design parameters on …
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AASHTO T-96 – Resistance to Abrasion of Small Size Coarse Aggregate by use of the Los Angeles Machine AASHTO T-248 – Reducing Field Samples of Aggregate to Testing Size ... This text is intended as a study guide for Quality Control/Quality Assurance of aggregates at the
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Machine learning model developments to predict fresh and hardened properties of concrete. ... The plastic aggregates used in the study are manufactured from waste plastic which is subsidized for the time being for the research purpose. The optimization result is presented in Table 7. (5) Cost=1·43d 0 +11·43d 1 +2·14d 2 +2·86d …
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The development of self-compacting lightweight concretes is associated with solving two conflicting tasks: achieving a structure with both high flowability and …
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Rapid urbanization and industrialization have spurred an increase in concrete manufacturing, contributing to resource depletion and environmental damage. However, this challenge can be addressed by producing concrete from recycled aggregates and industrial waste ashes instead of natural aggregates and cement. …
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machine efficiency (Aungkulanon et al. 2012). In previous studies, aggregate production planning was applied to solve problems. For example, an aggregate production model for a Portuguese firm that produces construction materials by using a multiple criteria mixed
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In this study, three different kinds of aggregate were used: Limestone, Diabase, and Granite. Tests were conducted to find the properties of coarse aggregate and fine aggregate for the selection of material according to "Test Methods of Aggregates for Highway Engineering (JTG E42-2005)" [37].Crushing Value (C.V) and Los-Angeles …
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The shape of coarse aggregate is an important factor determining the performance of concrete, and it also affects the whole mixing process. This article selected four typical coarse aggregates and …
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Recycled aggregates include coarse recycled aggregates (CRA) with a typical particle size range of 4.75–31.5 mm and fine recycled aggregates (FRA) between 0.16 and 4.75 mm [27]. Since RA obtained from CDW contains hardened cement paste or mortar and the surface of RA is rough, many micro-cracks will be generated during the …
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The future studies can incorporate cost calculations for the carbonation process of coarse aggregate to provide a more comprehensive evaluation of all types of coarse aggregates. Additionally, as the investigation on the carbonation of RCA advances, it will be feasible to a broader range of properties in prediction and optimization analysis.
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Case studies on recycled aggregates in building and road pavement construction. ... ed bitumen was then mixed into the pulverized layers using a …
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Recent research has focused on assessing the effectiveness of response surface methodology (RSM), a non-machine learning technique, and artificial neural …
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Aggregate supply is a modeling tool economists use to show the relationship between the aggregate price level and the aggregate level of output in a given economy.Aggregate, when used in this ...
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The novelty of this study is to propose a ternary diagram based on these numerical and experimental studies of recycled aggregates crushing characteristics, …
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Recently, the machine-learning methods have received intense attention of researchers in prediction studies. In this study, four machine-learning techniques the GPR-Exponential, GPR-Matern5/2, SVM and RT are proposed for F-T prediction. The 44 different aggregate samples were collected from the Cukurova Region of Turkey.
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The detrimental effects of heavy wheel loads on pavements with saturated subbase materials are deemed to be deciding factors on the serviceability of pavements. The major damages owing to this are, immediate premature failures and reduced strength, culminating in severe deformation and decreased longevity of the pavements. This …
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In this study, initially, the physical experiment was conducted to measure the permeability and porosity of light-weight concrete with various amount of plastic waste aggregate (PWA) in different ...
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This study report provides preliminary results for Southwest Power Pool, Inc. (SPP) Aggregate Transmission Service Study (ATSS) SPP-2018-AG1. Pursuant to Attachment Z1 of the SPP Open Access Transmission Tariff (OATT), 2, 915 MW of long-term transmission service requests have been studied in this Aggregate Facilities Study (AFS).
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In Table 1, we present the types and properties of coarse aggregates commonly used in UHPC, as referenced from the engineering geology manual [8].The aggregates in the table are mainly divided into carbonate and silicate types. Basalt and Diabase, due to their elastic modulus exceeding 70 GPa and compressive strength over …
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The system frequency response (SFR) model describes the average network frequency response after a disturbance and has been applied to a wide variety of dynamic studies. However, the traditional literature does not provide a generic, analytical method for obtaining the SFR model parameters when the system contains multiple generators; …
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During the concrete mixing process, the transition of aggregates from a dry to a moist state introduces a crucial dynamic that significantly influences particle interaction, consequently impacting …
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In these machines, the perforated surface ( Fig. 2.33) is set into a frame that is agitated vigorously. They perform size separations from 250 mm down to 80 μm. ...
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This study proposes the hybrid machine learning model combining random forest and Taguchi optimization (RF-TGC) to predict the shear strength of recycled …
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The aim of the research was to design an advanced analytical tool for the precise characterization of microbial aggregates from biofilms formed on food-processing surfaces. The approach combined imaging flow cytometry with a machine learning-based interpretation protocol. Biofilm samples were collec …
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This paper discusses the properties of RCA, the effects of RCA use on concrete material properties, and the large scale impact of RCA on structural members. The review study yielded the following findings in regards to concrete material properties: (1) replacing NA in concrete with RCA decreases the compressive strength, but yields …
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There is a consensus that the performance of RAC is affected by a combination of factors such as water-cement ratio, replacement ratio of recycled coarse aggregate, curing age, etc (Liang et al., 2021; Liu, et al., 2022a, b), so the traditional method based on control variables may not be able to effectively analyze these …
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Recent research has focused on assessing the effectiveness of response surface methodology (RSM), a non-machine learning technique, and artificial neural networks (ANN), a machine learning approach, for predicting concrete performance. This research aims to predict and simulate the compressive strength of concrete that …
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